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Add Python 3.15 support, retire Python 3.8 wheels - #180
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cibuildwheel v3.3.1 cannot build Python 3.15 wheels (that landed in v4.0+), and Cython~=3.1.0 doesn't officially support 3.15's Limited API changes (needs the 3.3.x line). Bumping cibuildwheel to v4.2.0 drops its ability to build Python 3.8 wheels (EOL since Oct 2024), so PyPI will no longer publish prebuilt Python 3.8 wheels going forward; 3.8 users will need to build from sdist or upgrade. - requires-python raised to >=3.9, classifiers updated (3.8 removed, 3.15 added) - Cython build requirement bumped from ~=3.1.0 to ~=3.3.0 - test.yml and release.yml matrices updated to 3.9-3.15 - cibuildwheel bumped to v4.2.0; macOS arm64 is now built unconditionally since arm64 is supported for all remaining versions (3.9+), removing a broken version-string comparison - sdist job's pinned Cython version aligned with pyproject.toml - CHANGES calls out the Python 3.8 wheel retirement as a standalone, user-facing entry Verified locally: editable install and full test suite pass under Python 3.14 with Cython 3.3.0. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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- Bump __version__ to 2.4.0 - Finalize the 2.4.0 CHANGES entry (upstream Primer3 backport fixes from PR #179, Python 3.15 support and Python 3.8 wheel retirement from PR #180) - Update copyright end date in primer3/__init__.py's license header to 2026 (the __copyright__ string was already current) - Sync docs/quickstart.md and docs/development.md Python version ranges with the 3.9-3.15 support window Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
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Summary
test.yml/release.ymlCI matrices).requires-pythonis now>=3.9; PyPI will no longer publish prebuilt Python 3.8 wheels (3.8 reached end-of-life in October 2024). Users still on 3.8 will need to build from the source distribution or upgrade.Cythonbuild requirement from~=3.1.0to~=3.3.0(needed to build under Python 3.15's Limited API changes).cibuildwheelin the release workflow from v3.3.1 to v4.2.0 (needed to build Python 3.15 wheels; this is also what forces the Python 3.8 drop, since v4.0+ removed 3.8 wheel-building support).x86_64 arm64(the previous version-string conditional only ever evaluated true for Python 3.9 due to a GitHub Actions numeric-coercion quirk).Cythonversion withpyproject.toml.Test plan
pip install -e ".[dev]"andpytest(52 passed) locally under Python 3.14 with Cython 3.3.0, to confirm the Cython bump doesn't break the existing build.🤖 Generated with Claude Code